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Naso caeruleacauda  Randall, 1994

Blue unicorn
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| Native range | All suitable habitat | Year 2100 |
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Naso caeruleacauda   AquaMaps   Data sources: GBIF OBIS
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Image of Naso caeruleacauda (Blue unicorn)
Naso caeruleacauda
Picture by Randall, J.E.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Acanthuridae (Surgeonfishes, tangs, unicornfishes) > Nasinae
Etymology: Naso: Latin, nasus = nose (Ref. 45335).   More on author: Randall.

Environment / Climate / Range Ecology

Marine; reef-associated; depth range 15 - 45 m (Ref. 90102).   Tropical

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm SL male/unsexed; (Ref. 48637)

Short description Morphology | Morphometrics

Dorsal spines (total): 4 - 5; Dorsal soft rays (total): 28-30; Anal spines: 2; Anal soft rays: 29. No narrow dark bars on body. Caudal fin blue in life. Dorsal profile of head from above upper lip to above centre of eye straight. Anterior interorbital region and adjacent space between nostrils strongly convex. Body depth 2.75 to 2.8 times in SL (Ref 9808).

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Central Pacific: Philippines and Indonesia.

Biology     Glossary (e.g. epibenthic)

Found in schools, mainly along outer reef walls to moderate depths in pursuit of plankton (Ref. 48637).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator : Randall, John E. | Collaborators

Randall, J.E., 1994. Unicornfishes of the subgenus Axinurus Perciformes: Acanthuridae: Naso), with description of a new species. Copeia 1994(1):116-124. (Ref. 10671)

IUCN Red List Status (Ref. 96402)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FisheriesWiki | Sea Around Us

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Internet sources

BHL | Cloffa | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | Faunafri | Fishtrace | GenBank(genome, nucleotide) | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | iSpecies | PubMed | Scirus | SeaLifeBase | Tree of Life | uBio | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoobank | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02399 (0.01041 - 0.05528), b=2.94 (2.75 - 3.13), based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic Level (Ref. 69278):  2.3   ±0.2 se; Based on size and trophs of closest relatives
Resilience (Ref. 69278):  Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153):  Moderate vulnerability (43 of 100) .